The best test of a children's book is to read it to your grandkids. The best entertain the adult as well as the children. Mine were entertained by some of the stories but asked if we could skip some of them. I agreed. Some stories were a bit long-winded and just did not capture their attention. They did enjoy the stories that did.

I bought this and the Kaplan one. I'd say that this Princeton Review seems to have more in-depth review in the text. But it has two downsides: one is that great swaths of text go by with no questions, so you can't tell if you understand the material in the way that will be useful on the test. The second downside is the practice test. I just took practice test 1 online and it was "hard" but also poorly written -- grammatical errors, times when two of the multiple choice answers were exactly the same, and perplexingly, the practice test had two essays to write (!?). The Kaplan practice exams were much better. Long ago I worked for Princeton Review as an instructor, and the line they told me that perhaps wrongly put my faith in them was that at Kaplan they invest in marketing, but at Princeton Review they invest in research and development. That doesn't seem right for this book, in it being from 2011 on the inside copyright page (though the back cover is copyright 2013--perhaps just the design and images?). Plus the outdatedness of the materials were further shown by having to do obscure Java permissions on an outdated browser to get the exam to work.